Morning all,
kata - I had the same in this pg and so paid for the private scan. It took a bit of shopping around but found one for £70, which was pretty basic and in a really ropey part of town, but it was so worth it.
Oh saggy
- what an awful start to the day. But remember that throwing up is a symptom so yay for that 
I think the biggest preparation you can do for your DH's is to talk them through it. Warn them that there will be lots of boring bits (and if you have a DH with low boredom threshold, get them to bring in magazines/books/iphones whatever to keep them entertained in the quiet bits. As long as you have something to do at the same time (to be fair, I fell asleep between contractions - I don't do late nights very well, and it was 3am. DH read about half a book!)
I'm surprise (janie??) that you're only allowed one birthing partner - I think most hospitals allow two, essentially to allow you to have your husband and your mum (they must realise that 75% of men are useless in a crisis???). Actually, reading the NICE guidelines to interpartum care (childbirth) it says "women should be encourage to have support from birth partner(s) of their choice" so I think you could demand to have both present, and they couldn't refuse.
Anomoly scan at 1pm. Wavering between posifrickitivity (excited as we're going to see if we can find out the sex, and I LOVED seeing the details like the four chambers of the heart last time) and complete utter negafrickitivy (I've already mentally written the untelling work/friends emails). DH is going to try to make it - I really hope he can as I need someone to hold my hand.